Problem with Toshiba Protege M200 lcd screen...

Hello all,
I have a slight problem here :) I have a Toshiba Protege M200 tablet that I took out of storage the other day and when I went to boot up the lcd screen is not working. All I get is a black screen with multiple vertical colored lines across the screen. I do get video on a seperate monitor when I plug that in the back port. I thought it might be drivers or the BIOS and I updated both but still no luck. Here are the specs:

Toshiba Protege M200
1.50Ghz
768MB
NVIDIA GeForce FX Go5200 32M/64M
XP service pack 1

Thanks to anyone that can help me out with this problem. I really appreciate the help, and if there is anything else that you guys need as far as information let me know cause I probably left out some important obvious features.

Peace,
Joe

So if you use an external monitor, and go to display properties/settings, does it list two monitors? Does moving the screen affect anything? I suspect the connection to the screen may have come apart inside. You didn't drop it or crack the screen?

So if you use an external monitor, and go to display properties/settings, does it list two monitors? Does moving the screen affect anything? I suspect the connection to the screen may have come apart inside. You didn't drop it or crack the screen?
Yes it displays two monitors, and I don't recall ever dropping the device. No, moving the screen does nothing to the lines, but they do fade out if it's been on for about 10-15 minutes. It sounds like it could be the connection now that you mention it, but why would it all of a sudden just not work? Thanks for the input :)

This tablet is a swivel screen model right? Like this?
http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=264308&affiliate=pricegrabber
I don't know how they can make a screen swivel and still display, so I don't know exactly what might be wrong, but I'd think it'd have something to do with the swivel mechanism. I'm guessing it's fairly new, so does it have any warranty?